#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>

namespace test
{
	int rand = 10;

	int Add(int left, int right)
	{
		return left + right;
	}

	struct Node
	{
		struct Node* next;
		int val;
	};
}

int main()
{
	printf("%d\n", test::Add(1, 1));

	struct test::Node p1;

	return 0;
}